indication you should observe. If a step contains more than one action, complete all of the actions
within the step before proceeding. The directions at the end of an EPC step must be completed before
going to the next EPC step. If abnormal indications are observed for any EPC step, reference the step
when: completing columns a and c of the DA Form 2404. Throughout GTA 11-3-49 are cautions,
warnings, and directions that must be observed and followed for personnel and equipment safety as well
as for an accurate evaluation of all the intercom set functions.
c. See the preparatory actions in Section I, GTA 11-3-49 (Figure 16).
(1) Initial adjustments. The first action in a logical sequence for checking the operation of an
intercom set is making the initial adjustments. This includes preparatory actions before power is
Figure 16. Initial adjustments, Section I of GTA 11-3-49.